Question

1. in what way are the numbers of airport runways related to the numbers on a circular protractor?

Explanation:

Airport runway numbers are based on magnetic headings. A circular protractor measures angles from 0 - 360 degrees. Runway numbers are derived from the runway's magnetic - heading rounded to the nearest 10 degrees. For example, if a runway's magnetic heading is 273 degrees, the runway number is 27 (273 rounded to the nearest 10). Just as a protractor measures angles, runway numbers are related to the angular orientation (magnetic heading) of the runway.

Answer:

Airport runway numbers are related to the angular orientation (magnetic heading) of the runway, similar to how a circular protractor measures angles. The runway number is the rounded - off magnetic heading of the runway (to the nearest 10 degrees).